The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*dwís
- Ancient Greekδιά (diá)
- Ancient Greekδια- (dia-)
- Proto-Indo-European*h₂esp-der.?
- Latinasper
- Ancient Greekἄσπρος (áspros)
- Medieval Greekδίασπρος (díaspros)
- Medieval Latindiaspra
- Old Frenchdyapre
- Middle Englishdyaper
- Englishdiaper
- Middle Englishcokewold
- Englishcuckoldclip.
- Englishcuck
- English todaydiapercuck
From diaper (“an absorbent garment”) + cuck (“a cuckold or cuckquean: a man or woman (respectively) who is attracted to, or aroused by, the sexual infidelity of a partner”).
Etymology from Wiktionary, CC BY-SA 4.0.